Consider following set of equilibria that occur in our blood H3O+ (aq) + HCO3(aq

Question

Consider following set of equilibria that occur in our blood H3O+ (aq) + HCO3(aq) H CO3 (aq) + H2O(I)-. 2H20(1) + CO2 (aq) Use Le Chatelier's Principle to predict what will happen after additional H3O enters our blood from excessive exercise Part G Both reactions will shift Please Choose Submit My Answers Give Up Part H At the new equilibrium, the concentration of H3 O(aq) will be than before the addition of extra H3O. Please Choose Submit My Answers Give Up Part I At the new equilibrium, the concentration of CO2(aq) will be Please Choose before the addition of extra H3O+. Submit My Answers Give Up Part J - The concentration of H3O in our blood must be maintained at a relatively constant value so that the pH stays at about 7.4. An increase in H30 will lower the pH, and a decrease in will raise the blood pH. Death can result if the pH falls below 6.8 or rises above 7.8 Explain, in terms of Le Chatelier's principle, how this set of equilibria involving a buffer system prevents large changes in pH (or H3O concentration) Essay answers are limited to about 500 words (3800 characters maximum, including spaces) 3800 Character(s) remaining Submit My Answers Give Up

Explanation / Answer

G)

addition of H3O+ will favours HCO3- towards H2CO3

if this is true, then

H2CO3 shifts towards CO2(aq) production

H)

in th enew equilbirium [H3O+] must increase, since it is directly added

I)

CO2(aq) will increase, since it was displaced HCO3 --> H2CO3 --> CO2

j)

increase in H+ can be buffered via HCO3- and CO3-2, H2CO3 equilibrium

note thata for ph = 7.8 we need the 2nd ionization, which is

H2CO3 = HCO3- + H+

therefore, we must obtain asoruce of cabronic acid, which isw CO2(g) we exhale, somem is kept in blood as CO2(aq)

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